Typewriting machine



Feb. 6, 1934-. 4 I A, HART 1,945,895

TYPEWRITING MACHINE File d Nov. 16, 1931 v 'e Sheets- Sheet 1 WITNESSESINVENTOR Feb. 6, v F. A. HART f TYPEWRITING. MACHINE i Filed Nov. 16,1951 6 Sheets-Sheet 2 Fig I I I 1 a l wit? 1 DQ Feb. 6, 1934. H T'1,945,895

TYPEWRITING MACHINE I Filed Nov. '16, I931 e Shets-Sheet s WITNESSES I[1 ATTOR N EY Feb. 6, 1934.

F. A. HART v TYPEWRITING MACHINE Filed Nov. 16, 1931 6 Sheets-Sheet 4INVENTOR- WITNESSES ATTORNEY .F 6, 1934- F. A. HART *TYPEWRITING MACHINEFiled Nov. ,16, 1931 6 Sheets-Sheet 5 -INVENTOB ATTORNEY F. A. HARTTYPEWRITING MACHINE Filed NOV. 16, 1931 Feb. 6, 1934.

6 Sheets-Sheet 6 NQTM Q S. \Q.

-INVENTOR W 4/4449 Patented Feb. 6, 1934 UNITED STATES PATENT OFFICETYPEWRITIN G MACHINE Application November 16, 1931 Serial No. 575,345

33 Claims.

My invention relates to typewriting, combined typewriting and computingand like machines and more particularly to power actuated tabulatormechanism therefor.

The main object of my invention, generally stated, is to provide highlyefficient mechanism of the character specified. I

A further object of myinvention is to provide mechanism of thecharacterreferred to whichmay be readily embodied in existing machines withoutmodifying, or materially modifying, the existing structural features ofsuch machines.

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, arrangements of parts andcombinations of devices set forth in the following description andparticularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters indicatelike parts in the different views Fig. 1 is a fragmentary, vertical,fore and aft sectional view showing a portion of the tabulator mechanismand some of the associated parts.

Fig. 2 is a fragmentary top plan view of the tabulator mechanism withsome of the associated parts, a portion of the structure being sectionedaway.

Fig. 3 is an enlarged detail, fragmentary horizontal sectional view of aportion of the same, the section being taken on the line 3-3 of Fig. 4and looking in the direction of the arrows at said line.

Fig. 4 is an enlarged, detail, side elevation, with parts sectionedaway, of a portion of the structure disclosed in Fig. 2, and as seenfrom the righthand side of the machine and with the parts in normalposition.

Fig. 5 is a view that corresponds somewhat to Fig. 4 except that theparts are shown in the actuated position, as they appear when atabulator key is held depressed.

Fig. 6 is a diagrammatic side view showing the driving connectionsbetween the motor and different parts actuated thereby.

Fig. '7 is a detail side view of one of the tabulator key levers andsome of the parts controlled thereby.

Fig. 8 is an enlarged, detail, fragmentary, face view of the adjustablecontact by which the arresting trips are actuated, together with some ofthe associated parts.

Fig. 9 is an enlarged detail sectional view taken on the line 9--9 ofFig. 5 and looking in the direction of the arrows at said line.

v I have shown my invention embodied in the present instance inRemington electrified bookkeeping machine, in 'which the devices of thepresent invention may be readily incorporated without modifying, ormaterially modifying, the existing structural features of said machine.It should be understood, however, that the invention is not restrictedto embodiment in such machine, but may be incorporated in typewriting,computing and like machines generally, wherever found available.

The denominational tabulator mechanism disclosed in the present instancecorresponds in part to that commonly employed in Remington machines.Thus, from an inspection of Fig. 1 it will be seen that the usualcarriage, comprising end bars 1, a rear cross bar 2 and a front crossbar (not shown) supports a platen 3 and is mounted on crossed bearingrollers 4. at the front and rear of the carriage to travel fromside-to-side of the machine. The carriage supports bracket arms 5 onwhich are fixed a column stop bar 6 having a series of column stops 7mounted thereon. These stops 7, as shown in the present instance, areadapted to be moved fore and aft on the column stop bar into and out ofeffective position.

A series of denominational stops 8 are arranged at letter spaceintervals, each being carried by and projecting forward from adenominational stop lever 9, pivoted at 10 in a tabulator frame 11 fixedto the typewriter frame.

In the present instance each of these levers 9 terminates at its lowerend in the rear of a slide 12 mounted on parallel supporting rods 13 formovement fore and aft of the machine and is guided in said movement byguide combs 14 that form part of a frame 15 by which the rods 13 I aresupported.

In accordance with the present invention the slides 12 are operated bypower actuated means, to be hereinafter described, and thus control themovements of the stops 8 to and from projected position, or into and outof the path of the effective column stops '7.

The movement of any stop 8 to effective position is operative to releasethe carriage from con-, trol of its escapement mechanism, so as to freethe carriage for tabulating movement. In the present instance this iseffected by a universal bar 16 carried by a frame pivoted at 17 to thetabulator frame 11 and provided with an arm 18. A pin 19 on the arm 18coacts with a link 20 pivoted at its lower end, at 21, to a crank arm 22on a rock shaft 23. Another crank arm 24 on this rock shaft is connectedto an upright link 28, to a standard 29 on the top plate 30 of themachine. The releasing device is provided with a contact shoe 31 thatunderlies a feed rack 32 carried by the carriage in the usual manner andnormally engaging a feed pinion 33 operatively connected with theescapement wheel.

An anti-clockwise movement of any lever 9 against the force of itsreturning spring 9 to project the corresponding stop 8 to effectiveposition, results in rocking the universal bar 16 and transmitting anupward movement to the contact shoe 31, thereby disengaging the feedrack 32 from the feed pinion 33.

It will be understood, that so far as the power actuated mechanism ofthe present invention which is about to be described is concerned, itmaybe employed to actuate any suitable tabulator mechanism although suchpower actuated mechanism was specially designed in'the present instancefor cooperation with the existing tabulating mechanism shown, or so muchof it as has thus far been described.

The actuating devices about to be described are supported by a separateauxiliary frame designated as a whole by the reference numeral 34 andwhich is detachably connected to the base section 35 of the mainframe ofthe machine by screws 36, so that said frame 34 and the parts carriedthereby may be introduced into and removed from the machine as a singleunit.

The auxiliary frame 34 supports a pivot rod 37 (see Fig. 4) on which aremounted a series of angular or bell crank levers or actuating device 38,equal in number to the slides 12 and the stop carrying levers 9 withwhich they coact. The levers 38 are guided by guide combs 39 and 39supported by the auxiliary frame, and the upper rearwardly extending endof the upright arm of each lever'38 coacts with the forward end of theassociated slide 12. The horizontally disposed arm of each lever 38 isconnected to one end of a contractile returning spring40 anchored at itsother end to a plate 41 secured to the auxiliary frame 34.

The upright arm of each lever 38 has pivoted thereto, at 42, a link,selective actuating device or interponent 43, that swings vertically andalso moves bodily fore and aft of the machine in a slot in an uprightguide comb 44. This guide comb is formed from the same piece as theguide comb 39 and is secured to the auxiliary frame 34. Cooperative witheach interponent 43 is an underlying slide 45, each slide being guidedfor vertical movement at its upper end in a guide slot in the plate inwhich the guide combs 39 and 44 are formed, and at its lower end in aguide slot in the plate in which the guide comb 39 is formed. Each slide45 is arranged directly beneath and coacts with the associatedinterponent 43 so that an elevation of a slide will result in swingingthe forward end of the associated interponent upward around its pivot42, from the Fig. 4 to the Fig. 5 position. This results in bringing thefree end of the elevated interponent in the path of movement of auniversal actuating member 46 adapted to receive a reciprocatory oroscillatory movement fore and aft of the machine and to coact with anyof the interponents 43 when the latter are raised .into the paththereof.

The manner, in which the interponents 43 are selectively elevated intothe path of the universal actuating member 46 will now be described.

receives its support on the base section 35 of Referring moreespecially'to Fig. 7, it will be understood thataseries of bell cranktabulator key levers 47 provided with tabulator keys 47 are pivotallysupported on a pivot rod 47* that 0 8 the machine frame. The dependingarm of each lever 47 is detachablypivoted, at 48, to a link 49 thatextends fore and aft of the machine. It will be understood from aconsideration of Fig. 2 that the forward end portions of the links 49extend in converging vertical planes, whereas the rear end portionsthereof are arranged in vertical parallel planes, where they aresupported from beneath them by a supporting roller 50. This roller isprovided with reduced ends 51 by which the roller is supported inbearings provided for by U-shaped bracket arms 52 formed on the sameplate in which the guide comb 39 is cut. This plate has a right anglebend therein, in the. upright portion of which is provided a series ofguide slots 53 (Fig. 7) each adapted to receive and guide the free endportion of one of the links 49.

Each link 49 at its rear end portion is arranged adjacent to itscompanion slide 45, and the latter carries an anti-friction roller 54preferably supported on its slide by bearing balls 55 (see Figs. 3 and7). Each roller 54 rests on the upper edges of its companion link 49 andis adapted to coact with a cam" thereon. Each cam comprises a lowportion 56 on which the companion roller normally rests, an inclinedface '57 by which the companion slide is elevated when the link movesrearward, and a dwell 58 on which the roller is-supported to hold thecompanion slide in its elevated position and resist any tendency of anactuated slide 45 to return to normal position until itscompanion link49 moves forward to normal position. The return of each tabulator keylever 47 and its link 49 to normal position, when the depressed key isreleased by the operator, is effected by a contractile return spring 59connected at one end to an upright arm 60 on the companion link 49 andanchored at the other end to an angle bar 61. One effect, therefore, ofdepressing a tabulator key is to elevate an interponent 43 into the pathof movement of the actuating member 46 and to hold the interponent insuch position as long as the key is held depressed by the operator.

The actuating member 46 is mounted and controlled in the manner now tobe described.

The member 46 in addition to its cross bar which coacts with all of theinterponents 43, has depending supporting arms 62 and 63 at the endsthereof. Each of these arms has a hub 64 pinned to a rock shaft 65mounted to rock in hearings in the auxiliary frame 34. The left hand endof this shaft extends beyond said frame where it is provided with acrank arm 66 to which one endof a spring 67 is attached, the oppositeend of the spring being anchored on a pin 68 projecting from the frame34. The arm 62 carries an anti-friction roller 69 mounted on hearingrollers 70. 'I'hisroller 69-coacts with the periphery of 'a rotative cam'71 to control the back and forth movements of the actuating member 46,and through the key selected interponents 43, control the denominationaltabulator stops 8.

The cam 71 is controlled at each actuation of 145 a tabulator key in thefollowing manner:

The cam 71 is mounted and free to turn on hearing balls a (see Fig. 3)on a continuously running motor driven shaft 72. Adjacent to said camand fixed to the shaft 72 is a locking wheel 150 73 notched at regularintervals, as indicated at 74. The cam 71 carries a latch 75 pivoted onone side thereof, as indicated at 76. The engaging nose 77 of this latchis adapted to be received in one or another of the notches 74 in thelocking .wheel, and thus connect the cam 71 to revolve with the shaft72. A spring 78 exerts its force on the latch 75 to bring about anengagement thereof with the locking wheel. However, when either of thetrip devices 79 and 80 engages a projection 81 on the latch, as shown inFigs. 4 and 5, the latch is maintained in the disengaged positionagainst the force of its spring 78, thus holding the cam againstmovement.

There are two high spots or portions 71 and 71 on the cam 71, and from aconsideration of Figs. 4 and 5 it will be seen that the spring pressedroller 69 bears on the cam below the high portion 71 thereof when thelatch is engaged by the trip 80, whereas the said roller bears below thehigh portion 71 on the cam when the latch is engaged by the trip 79. Theeffect of this construction is that the greater effective force of thespring 67 exerted on the roller 69 will counteract the reaction of thelatch spring 78, which otherwise would tend to turn the cam 71 in aclockwise direction in Figs. 4 and 5 when the latch is held released byeither of the trips 79 or 80.

The motor driven shaft 72 is preferably supported at its left-hand endon hearing balls b in one side of the base section 35 of the frame, as'

shown in Fig. 3. The shaft is supported intermediate its ends by bearingballs 0 in an arm 82 detachably secured by screws 83 to the auxiliaryframe 34 and arranged in close proximity to the cam. The right-hand endof the shaft 72 is supported on a ball bearing (not shown) in the basesection, such bearing corresponding to that indicated at the other endof the shaft. The lefthand end of the driving shaft 72, where it extendsbeyond the base, has a pinion 84 fixed thereon. From a consideration ofFigs. 2, 3 and 6 it will be understood that the pinion 84 meshes with anidler 85 mounted on bearing balls d on 7. the base, and that this idlermeshes with a gear 86 fixed on a shaft 87 that carries the usual motordriven snatch roll 88 by which the alphabet printing type bars (notshown) are actuated. From a consideration of Fig. 6 it will beunderstood that the right-hand end of the shaft 8'7 carries a pulley 89by which the snatch roll is driven. A belt 90 drives the pulley 89 aswell as other parts, and is driven by a pulley 91 on the shaft 92 of acontinuously running electric motor 93.

I will now describe the means by which the trips 79 and 80 arecontrolled from the tabulator keys and control the revolution of the cam71.

: thereto and that said hub receives a pivotal support on a headed pinor stub shaft 95. The reduced end 96 of this shaft is received in abearing in the auxiliary frame 34 and. is held fixed in said bearing bya set screw 97. The rear end of the trip 80 is pivotally connected at 98to an upwardly extending link 99 pivotally connected at 100 to the rearend portion of the trip 79. The two trips '79 and 80 are thus connectedto move in unison; the trip 79 moving down into the path of theprojection 81 on the latch 75 as the trip 80 moves out of the paththereof and vice versa.

The trip 80 is constructed and mounted like the trip 79, except that thelatter is provided with a hook-like engaging projection 79 to engage thelatch in its movement from right to'left, whereas the terminal end.ofthe trip 80 engages the trip in its movement from left to right.Therefore, the same reference numerals will be employed to designatecorresponding parts of the two trips and their mounting means. trip '79is connected to the upper end of a contractile spring 101, the lower endof the spring being anchored to the plate in which the guide comb 39 isformed. The force of this spring is exerted to normally hold the trip 79out of the path of the latch 75 and the trip 80 normally in the paththereof, as shown in Fig. 4.

In order to control the trips 79 and 80 at each actuation of a tabulatorkey I employ a yokelike universal bar 102 the forwardly bent arms 103 ofwhich are pivoted at 104 to the auxiliary frame 34. This universal baroverlies the upper edges of all of the interponents 43 in a position tobe moved upward around its pivots 104 to the Fig. 5 position when any ofsaid interponents is elevated on the depression of the correspondingtabulator key 47 The universal bar 102, 103 in its normal loweredposition is supported by an adjustable screw stop 102* (Fig. 5) so as tonormally maintain said bar free from contact with the interponents 43 asshown in Figs. 4 and 8. The universal bar 102 carries an adjustablecontact in the nature of a bar 105 provided with inclined slots 106 (seeFig. 8) through which the stems of headed screws 107 pass. As shown inFig. 4 the rear threaded ends of these screws are received in tappedopenings in the universal bar 102. This construction affords a raisingor a lowering of the contact 105 on the universal bar when the screwsare loosened, and when they are tightened the contact is clamped in itsadjusted position. This contact underlies the rear end of the trip 79,and as the universal bar is elevated the engaging end of the trip willbe lowered to the Fig. 5 position in the path of the latch 75, or theprojection 81 thereon. The same movement of the trip 79 moves the trip80 to releasing position, shown in Fig. .5. This releases the latch 75and it will engage the locking wheel 75 and cause the cam 71 to turntherewith and with the shaft 72. The same depression of a tabulator keyelevated an interponent 43 in the path of the actuating member 46 sothat when the latter is actuated by the released cam 71 the effectiveinterponent will be moved rearward, as indicated in Fig. 5, to projectthe corresponding tabulator stop 8 to effective position. The cam 71released from control of its trip 80 in the manner described, will makea half revolution before it is arrested and freed from connection withthe driving shaft 72 by the trip 79 coacting with the latch 75, as shownin Fig. 5. The parts will remain in the position shown in this figure aslong as the operator maintains the actuated tabulator key depressed, itbeing understood that such key should be held depressed until thecarriage has completed its tabulating movement. When the operatorreleases said depressed key the companion link 49 will be drawn forward,lowering the associated slide 45 and interponent 43. This The rear endof the I results in a disengagement of the trip 79 and an interposing ofthe trip 80 in effective position, so that the cam 71 is freed to makethe'second half of its revolution before it is arrested by the trip 80.The effect of this is to enable the actuating when the arm 82 isdetached from said frame.

aware of this because of the peculiar action of the parts. In thepresent construction. theimmediate release of the tabulator key enablesthe cam 71 to make a complete cycle that results in projecting theassociated stop 8 andactuating the carriage release mechanism, but suchparts are enabled to immediately return to normal position during thesecond half revolution of the cam.

It will be observed from Fig. '7 that'the free end of each of the links49 is beveled at 49. The purpose of such bevels is to facilitateassembling the parts. Thus, when the links 49 are detached from theirlevers 4'7 by the detachable nuts and screw pivots by which they arepivoted to said levers at 48, then a rearward sliding movement of eachlink on its supporting roller 50 will enable the inclined face 49 tocoact'with the roller 54 on the associated slide 45 and automaticallylift the roller off the plate 39 and enable the roller to bear againstthe upper edge on the link. A further rearward movement of the linkcarries it into its and detached from the coacting parts on the aux:

iliary frame 34. This construction enables the frame 34 with the partscarried thereby to be introduced into the machine-as a separate unit Therecesses 43 in the upper edges of the interponents 43 are provided toenable the actuatin member 46 to clear said interponents when the latterare'in the lowered position.

In the present construction, as in that of my prior applicationSerialNo. 510,941, filed Jan. 24, 1931, the frame of the machine is madeof two sections, hinged together at the rear thereof to enable the uppersection to be swung back on.

the lower base section 35. 'In the present construction the carriage,the tabulator frame with the parts carried thereby, the-shaft 23together with the parts connected therewith, and the slides 12 togetherwith the parts that support and guide 'them are carried by the upperswinging section of the frame, whereas the remaining parts of the andthe tabulating mechanism is in condition to function.

The construction is such that the power actuated tabulator mechanism maybe rapidly actuated with the exertion of but very little force on thetabulator keys, yet the mechanism is comparatively simple inconstruction and easy to assemble in existing machines, with little orno modification of the existing structural features thereof.

Various changes may be made in the construction, and parts thereof maybe employed without others, without departing from my invention as it isdefined in the accompanying claims.

What I claim as new and desire to secure by- Letters Patent is:

1. The combination of tabulator stops, a motor, a cam driven thereby,tabulator keys, selective means controlled by said keys for selectivelymoving said stops. to'eifective position by said cam and formaintaining'a projected stop in effective position so long as theassociated tabulator key is held in its actuated position.

2. The combination of tabulator stops, a power driven cam, tabulatorkeys, and selective means controlled by said keys for selectively movingsaid stops to effective position by said cam.

3. The combination of tabulator stops, a power driven cam, tabulatorkeys, selective means controlled by said keys for selectively movingsaid stops to effective position by said cam, and means effective on thedepression of a tabulator key for disconnecting said cam from its powerdriven means after the cam has completed a part only of its cycle andthereby holding the projected stop in effective position while the keyis maintained depressed.

4. The combination of a power driven shaft, a cam loosely mounted onsaid shaft, connecting means for fixedly connecting said cam to turnwith said shaft, a tabulator key, means controlled by said key forcontrolling said connecting .means to effect a partial revolution ofsaid cam with the shaft on'the depression of said key and cam when thekey is released and returns to normal position, and a tabulator stopmoved to effective' position by said camon the first partial revolutionthereof and returned to normal position onthe completion of therevolution of the cam.

5. The combination of a power driven shaft, a cam loosely mountedthereon, a latch for fixedly connecting said cam to turn with saidshaft, a

- plurality of tabulator stopscontrolled in their movement into andout'of effective position by said cam, a pluralityof tabulator keys andmeans controlled thereby-for selectively controlling the tabulator stopto be actuated by said cam and for controlling said latch.

6. The combination of a power driven shaft, a

cam loosely mounted on said shaft, a latch for fixedly connecting saidcam to turnv with said shaft, a tabulator stop, means including said camfor controlling the movement of said tabulator stop into and out ofeffective position, a tabulator key, and means controlled thereby forcontrolling said latch, said last mentioned means comprising two 'tripdevices which coact alternately with said latch.

'7. The combination of a power driven shaft, a cam loosely mountedthereon, a latch for fixedly connecting said cam to turn with saidshaft, a tabulator stop, means including said cam for controlling themovement of said tabulator stop into and out of effective position, atabulator key, and means controlled thereby for controlling said latch,said last mentioned means comprising two trip devices which coactalternately with said latch first to enable the latch to be moved toengaging position by withdrawing one trip device from contact therewithduring the depression of the tabulator key and for simultaneouslyinterposing the other trip device in the path of the latch to disengageit after the cam has completed a predetermined extent of turningmovement.

8. The combination of a power driven shaft,

a cam, loosely mounted thereon, a latch carried by said cam forpositively connecting said cam to turn with said shaft, a tabulatorstop, means including said cam for controlling the movement of saidtabulator stop into and out of efl'ective po-.

sition, a tabulator key, and means controlled thereby for controllingsaid latch, said last mentioned means comprising two trip devices whichcoact alternately with said latch first to enable the latch to be movedto engaging position by withdrawing one trip device from contacttherewith during the depression of the tabulator key and forsimultaneously interposing the other trip device in the path of thelatch to disengage it after the cam has completed a predetermined extentof turning movement, whereby the projected tabulator stop may be held inits effective position as long as the key is held depressed, the secondtrip device being withdrawn from contact with the latch and the firsttrip device being interposed in the path thereof when the depressed keyis released by the operator and returns to normal position, therebyenabling the tabulator stop to return to normal ineffective position anda disconnection of the cam from the power shaft to be effected when thecam has completed its cycle.

9. The combination of tabulator stops, and power driven means foractuating said tabulator stops including a power actuated cam, selectiveinterponents one for each of said tabulator stops, tabulator keys, andmeans controlled by said keys for selectively controlling saidinterponents for actuation by said power actuated cam.

10. The combination of tabulator stops, and power driven means foractuating said tabulator stops including a power actuated member,selective interponents one for each of said tabulator stops, tabulatorkeys, means controlled by said keys for selectively controlling saidinterponents for actuation by said power actuated member, a rotary camfor actuating said power actuated member, and means controlled by thetabulator keys for controlling the rotation of said cam.

11. The combination of tabulator stops, actuating connections therefor,and power driven means for actuating said tabulator stops including apower actuated reciprocatory member, power actuated mechanical means forcontrolling the reciprocation of said reciprocatory member selectivemembers movable selectively into the path of said reciprocatory memberwhere they are rendered effective to transmit motion from saidreciprocatory actuating member to the actuating connections for saidtabulator stops, tabulator keys, and means controlled by said keys forselecti'vely controlling said selective members for the transmission ofmovement through the actuating connections to the respective tabulatorstops.

12. The combination of tabulator stops, actuating connections therefor,and power driven means for actuating said tabulator stops including apower actuated member, selective members movable into and out ofpositions where they are rendered effective to transmit motion from saidactuating member to the actuating connections for said tabulator stops,tabulator keys, means controlled by said keys for selectivelycontrolling said selective members for the transmission of movementthrough the actuating connections to the respective tabulator stops, apower actuated cam, and means controlled by said keys for causing saidcam to be actuated by its power actuated means. I

13. The combination of tabulator stops, actuating connections therefor,and power driven means for actuating said tabulator stops including apower actuated member, selectivemembers movable into and out ofpositions where they are rendered effective to transmit motion from saidactuating member to the actuating connections for said tabulator stops,tabulator keys, means controlled by said keys for selectivelycontrolling said selective members for the transmission of movementthrough the actuating connections to the respective tabulator stops, apower actuated cam for actuating said actuating member, and meanscontrolled by a depression of any of said keys for effecting a halfrevolution of said cam under the force of its power and for effectingthe second half of the revolution of said cam when a depressed key isreleased and returns to normal position.

14. The combination of tabulator stops, a reciprocatory actuating membertherefor, actuating connections for said stop including selectivemembers movable into and out of the path of said actuating member,tabulator 'keys, means controlled thereby for selectively moving saidselective members into the path of said actuating member, and powermeans for reciprocating said actuating member and for holding it in itsac tuated position so long as a tabulator key is maintained depressed.

15. The combination of tabulator stops, a reciprocatory actuating membertherefor, actuating connections for said stop including selectivemembers movable into and out of the path of said actuating member,tabulator keys, means controlled thereby for selectively moving saidselective members into the path of said actuating member, power meansfor reciprocating said actuating member and for holding it its actuatedposition so long as a tabulator key is maintained depressed, and meanscontrolled by said keys for controlling the action of said power meanson said actuating member.

16. The combination of tabulator stops, an actuating member therefor,actuating connections for said stop including selective members movableinto and out of the path of said actuating member, tabulator keys, meanscontrolled thereby for selectively moving said selective members intothe path of said actuating member, a cam for controlling the movement ofsaid actuating member, power means for turning said cam, and

means controlled by said keys for controlling the I movement of said camby its power means.

1'7. The combination of tabulator stops, an actuating member therefor,actuating connections for said stop including selective members movableinto and out of the path of said actuating member, tabulator keys, meanscontrolled thereby for selectively moving said selective members intothe path of said actuating member, a cam for controlling the movement ofsaid actuating member, power means for turning said cam, meanscontrolled by a depression of each of said keys for turning said cam ahalf revolution by its power means thereby holding the projected stop ineffective position as long as a key is held depressed and for turningthe camthe other half revolution when the depressed key is released andreturns to normal position, thereby afiording a return of theprojectedtabulator stop to normal position.

18. The combination of a power actuated shaft, a cam loosely mounted onsaid shaft, locking shaft, a plurality of tabulator keys, meansconshaft, a plurality of tabulator keys, means controlled by theactuation of any of said keys for controlling said locking means, aplurality of tabulator stops, and selective means intermediate said camand stops and selectively controlled by said keys for selectivelycontrolling the movement of'said stops into and out of effectiveposition under control of said cam.

20. The combination of a power driven shaft, a cam loosely mounted onsaidshaft, a latch carried by said cam, a locking wheel fixed to turnwith said shaft and with which said latch is adapted to engage to causethe cam to turn with the shaft, a tabulator key, means controlledthereby for controlling the movement of said latch into and out ofengagement with said locking wheel, a tabulator stop, a normallyineffective actuating device intermediate said cam and tabulator stopfor controlling the movement of said stop by the cam into and out ofeffective position, and means controlled by said tabulator key forrendering said actuating device effective.

21. The combination of a power driven shaft, a cam loosely mounted onsaid shaft, a latch carried by said cam, a locking wheel fixed to turnwith said shaft and with which said latch is adapted to engage to causethe cam to turn with the shaft, a plurality of tabulator keys, meanscontrolled thereby for controlling the movement of said latch into andout of engagement with said locking wheel, a plurality of tabulatorstops, actuating devices actuated by said cam for controlling themovement of said stops into and out of effective position, and selectivemeans controlledby said keys for selectively rendering said actuatingdevices effective;

22. The combination of a power driven shaft, a cam loosely mounted onsaid shaft, a latch carried by said cam, a locking wheel fixed to turnwith said shaft and with which said latch is adapted to engage to causethe cam to turn with the shaft, a plurality of tabulator keys,

' means controlled thereby for controlling the movement of said latchinto and out of engagement with said locking wheel, a plurality oftabulator stops, and means actuated by said cam for controlling themovement. of said stops into and out of effective position, said lastmentioned means comprising an oscillatory member controlled by said cam,individual actuating devices one for each of said stops, and meanscontrolled by said keys for selectively moving said actuating devicesinto the path of said oscillatory member.

23. The combination of tabulator stops, and

power actuated key selected means for controlling the movement of saidstops into and out of effective position, said means including a poweractuated oscillatory member,'individual actuating devices one for eachof said'stops, tabulator keys, means controlled by said keys forselectively moving said actuating devices into the path of saidoscillatory member, and means for maintaining the actuated tabulatorstop in its actuated position so longas the associated tabulator key isheld depressed.

24. The combination of tabulator stops, and

power actuated key selected means for controlling the movement of saidstops into and out of effective position, said means including anoscillatory member, individual actuating dev ces one for each of saidstops, tabulator keys, means controlled by said keys for selectivelymoving said actuating devices into the path of said oscillatory member,individual actuating devices movement of said oscillatory member, apower driven shaft, connecting means for connecting said cam to turnwith said shaft, and means controlled by said keys for controlling saidconnecting means.

25. Thecombination of tabulator stops, and power actuated key selectedmeans for controlling the movement of, said stops into and out ofeffective position, said means including an oscillatory member,individual actuating devices one for each of said stops, tabulator keys,means controlled by said keys for selectively moving said actuatingdevicesinto the path of said oscillatory member, a cam that controls themovement of said oscillatory member, a power driven shaft, connectingmeans for connecting said cam 'to turn with said shaft, and meanscontrolled by the movement of any of said individual actuating devicesinto and out of the path of the oscillatory member for controlling saidconnecting means.

26. The combination of tabulator stops, and power actuated key selectedmeans for controlling the movement of said stops into and out ofeffective position, said means including, a universal actuating member,individual actuating devices one for each of said stops, tabulator keys,means controlled by said keys for selectively moving said actuatingdevices into the path of said universal actuating member, a cam thatcontrols the movement of said member, a power driven shaft, connectingmeans forconnecting said cam to turn with said shaft, and meanscontrolled by the movement of any of said individual actuating devicesinto and out of the path of the universal actuating member forcontrolling said connecting means, the movement of any of said actuatingdevices into the path of said member resulting in connecting the cam toits shaft and the movement of such device out of the path of said memberresulting in disconnecting the camfrom its shaft.

27. The combination of tabulator stops, and power actuated key selectedmeans for controlling the movement ofsaid stops into and out ofeffective position, said means comprising a power actuated shaft, a cam,a latch for looking said cam to turn with said shaft, two trips forcontrolling said latch, means for connecting said trips to move inunison, one trip moving into the path of the latch when the other tripmoves out of the path thereof, tabulator keys. and means controlledthereby for controlling the movements of said trips.

28. The combination of tabulator stops, and power actuated key selectedmeans for controlling the movement of said stops into and out ofeffective position, said means comprising a power actuated shaft, a cam,a latch for looking said cam to turn with said shaft, two trips forcontrolling said latch, means for connecting said trips to move inunison, one trip moving into the path of the latch when the other tripmoves out of the path thereof, tabulator keys, means controlled therebyfor controlling the movements of said trips, an oscillatory actuatingmember oscillated by said cam, individual actuating devices one for eachtabulator stop, and means controlled by said keys for selectively movingsaid actuating devices into the path of said oscillatory member.

29. The combination of tabulator stops, and power actuated key selectedmeans for actuating said stops, comprising a continuously runningmotor-driven shaft, a cam, a spring-pressed latch carried by said camfor connecting the cam to turn with said shaft, means coacting with saidlatch to release it, and means coacting with said cam to hold it againstthe reactive force of its latch-spring when the latch is released.

30. The combination of tabulator stops, and power actuated key selectedmeans for actuating said stops comprising a continuously runningmotor-driven shaft, a cam having a high spot thereon, a spring-pressedlatch carried by said cam for connecting the cam to turn with saidshaft, means coacting with said latch to release it, and a springpressed roller bearing against said cam and coacting with the said highspot on the cam to hold the latter against the reactive force of itslatch spring when the cam is in normal position and the latch isreleased.

31. The combination of tabulator stops, and power actuated key selectedmeans for actuating said stops comprising a continuously runningmotor-driven shaft, a cam having two oppositely positioned high spotsthereon, a spring-pressed latch carried by said cam for connecting thecam to turn with said shaft, means coacting with said latch to releaseit at each half revolution thereof, and a spring pressed roller bearingagainst said cam and coacting with the high spots thereon to hold thecam against the reactive force of its latch spring when the latch isreleased, said roller comprising part of the means for controlling themovements of said tubulator stops.

32. The combination of a machine frame comprising two connectedrelatively movable sections, and tabulator mechanism parts of which arecarried by one of the frame sections and parts of which are carried bythe other of the frame sections, coacting parts of the tabulatormechanism on the two sections being brought into cooperative relationwhen the frame sections are brought together. 33. The combination of amachine frame comprising two connected relatively movable sectionsarranged one above the other, and power actuated key controlledtabulator mechanism parts of which are carried by one of said framesections and parts of which are carried by the other of the framesections, coacting parts on the two frame sections being brought intocooperative relation when the frame sections are brought together.

- FREDERICK A. HART.

CERTIFICATE or CORRECTION.

Patent. No. l, 945, 895.

February 6, 1934.

. FREDERICK A. HART.

It is hereby certifiedthat error appears in the printed specification ofthe above numbered patent requiring correction as follows:

Page 6, "M84, claim 24. for "individual actuating devices" read a camthat controls the; and thatthe aaid Letters Patent should be read withthis correction therein that the aam may conform to the record of thecase in the Patent Office.

Signed and sealed this 19th day of June, A. D. 1934.

(Seal) Bryan M. Battey Acting Commissioner of Patents.

